Storage rack for portable container



FIG. 1 is a top plan view of a storage rack for portable containers showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof, the rear being identical in appearance;

FIG. 4 is a right side elevational view thereof, the left side being identical in appearance.

FIG. 5 is a perspective view thereof. 

The ornamental design for a storage rack for portable containers, as shown and described. 